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Marino, Joseph P; Fisher, Paul W; Hofmann, Glenn A; Kirkpatrick, Robert B; Janson, Cheryl A; Johnson, Randall K; Ma, Chun; Mattern, Michael; Meek, Thomas D; Ryan, M. Dominic; Schulz, Christina; Smith, Ward W; Tew, David G; Tomazek, Thaddeus A; Veber, Daniel F; Xiong, Wenfang C; Yamamoto, Yuuichi; Yamashita, Keizo; Yang, Guang; Thompson, Scott K
Journal of medicinal chemistry, 08/2007, Letnik: 50, Številka: 16Journal Article
High-throughput screening for inhibitors of the human metalloprotease, methionine aminopeptidase-2 (MetAP2), identified a potent class of 3-anilino-5-benzylthio-1,2,4-triazole compounds. Efficient array and interative synthesis of triazoles led to rapid SAR development around the aniline, benzylthio, and triazole moeities. Evaluation of these analogs in a human MetAP2 enzyme assay led to the identification of several inhibitors with potencies in the 50−100 picomolar range. The deleterious effects on inhibitor potency by methylation of the anilino-triazole nitrogens, as well as the X-ray crystal structure of triazole 102 bound in the active site of MetAP2, confirm the key interactions between the triazole nitrogens, the active site cobalt atoms, and the His-231 side-chain. The structure has also provided a rationale for interpreting SAR within the triazole series. Key aniline (2-isopropylphenyl) and sulfur substituents (furanylmethyl) identified in the SAR studies led to the identification of potent inhibitors (103 and 104) of endothelial cell proliferation. Triazoles 103 and 104 also exhibited dose-dependent activity in an aortic ring tissue model of angiogenesis highlighting the potential utility of MetAP2 inhibitors as anticancer agents.
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in: SICRIS
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